 The Cotswold Auction Company sold one of their most unusual items. It dates back to around the beginning of World War II. A gold-mounted denture sold for more than $18,000. That's more than twice the expected price. Why so much? These six false upper teeth were designed to preserve the natural lisp of Sir Winston Churchill when he was 65 years old. They were so important that the Prime Minister carried two sets with him at all times.